CVE-2025-41115

Comprehensive Technical Analysis of CVE-2025-41115

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-41115 CVSS Score: 10

The vulnerability in question pertains to the SCIM (System for Cross-domain Identity Management) provisioning feature in Grafana Enterprise and Grafana Cloud versions 12.x. The issue arises from improper handling of user identities, specifically allowing a malicious or compromised SCIM client to provision a user with a numeric externalId. This can lead to the overriding of internal user IDs, resulting in impersonation or privilege escalation.

Severity Evaluation:

• CVSS Score: 10 (Critical)
• Impact: High
• Exploitability: High

The CVSS score of 10 indicates the highest level of severity, reflecting the potential for significant damage if exploited. The vulnerability can lead to unauthorized access, data breaches, and disruption of services, making it a critical concern for organizations using Grafana with SCIM provisioning enabled.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Compromised SCIM Client: An attacker with access to a compromised SCIM client can send malicious provisioning requests.
2. Malicious Insider: An insider with access to the SCIM client could exploit the vulnerability to escalate privileges or impersonate other users.
3. Man-in-the-Middle (MitM) Attack: An attacker intercepting SCIM provisioning requests could modify them to include a numeric externalId.

Exploitation Methods:

• Provisioning Request Manipulation: The attacker crafts a provisioning request with a numeric externalId that matches an internal user ID.
• Identity Override: The malicious provisioning request overrides the internal user ID, allowing the attacker to impersonate the user or escalate privileges.

3. Affected Systems and Software Versions

Affected Systems:

• Grafana Enterprise versions 12.x
• Grafana Cloud versions 12.x

Conditions for Vulnerability:

• enableSCIM feature flag set to true
• user_sync_enabled config option in the [auth.scim] block set to true

4. Recommended Mitigation Strategies

Immediate Actions:

1. Disable SCIM Provisioning: Temporarily disable SCIM provisioning until a patch is applied.
2. Monitoring and Logging: Enhance monitoring and logging of SCIM provisioning requests to detect and respond to suspicious activities.

Long-Term Mitigations:

1. Apply Patch: Upgrade to the latest version of Grafana that includes a fix for this vulnerability.
2. Access Controls: Implement strict access controls for SCIM clients and ensure they are secured against unauthorized access.
3. Network Security: Use secure communication channels (e.g., TLS) to prevent MitM attacks.
4. Regular Audits: Conduct regular security audits and vulnerability assessments of the SCIM provisioning process.

5. Impact on Cybersecurity Landscape

The discovery of this vulnerability highlights the importance of secure identity management and provisioning processes. Organizations relying on SCIM for user management must ensure robust security measures are in place to prevent such vulnerabilities. The high CVSS score underscores the potential for significant impact, including data breaches, unauthorized access, and service disruptions.

6. Technical Details for Security Professionals

Vulnerability Details:

• Root Cause: Improper handling of user identities in SCIM provisioning, allowing numeric externalId to override internal user IDs.
• Trigger Conditions: The vulnerability is triggered when SCIM provisioning is enabled and configured with specific settings.

Detection and Response:

• Detection: Implement intrusion detection systems (IDS) to monitor for unusual provisioning requests, especially those with numeric externalId.
• Response: Develop an incident response plan that includes steps to isolate affected systems, identify compromised accounts, and restore integrity.

Preventive Measures:

• Code Review: Conduct thorough code reviews and security testing of identity management features.
• Security Training: Provide training for developers and administrators on secure coding practices and identity management best practices.

Conclusion: CVE-2025-41115 represents a critical vulnerability in Grafana's SCIM provisioning feature. Organizations must take immediate action to mitigate the risk, including disabling SCIM provisioning temporarily, applying patches, and enhancing security controls. The incident underscores the need for robust identity management and continuous security assessments to protect against similar vulnerabilities in the future.